. >>> new this morning an alarming wakeup call in the south bay. ktvu janine de la vega is in san jose where police suspect someone set a house on fire. janine. >> reporter: we're here in willow glen. this neighborhood is a safe neighborhood. looks like an upper middle class neighborhood. two and a half hours ago police and firefighters were called here to this house because it appears that somebody set the door of the house on fire. i don't know if you can tell there it's a little dark but the door is discolored. that is because it has been blackened from the fire. firefighters were called here for a report of a house on fire. when they arrived they found the front door in flames. it was quickly extinguished and the three people inside were unharmed. they determined somebody threw a flammable liquid on the door and then they it will it on fire. >> they were kind of shaken up over the ordeal. this is something that is not normal and they don't know why it happened to them. and they were sleeping at the time. they woke up to a small commotion like a